Brake-beam-supporting bolt



Oct- 25,

' E. c. LUNSFORD BRAKE BEAM SUTPPOIRTINGIBOLT Fi1 ed Jan. 20. 1927 Fig L lm en for per I Arfomey 4 Patented Qct. i

UNITED STATES m1. cannon. Limsroan,

or snnnvnrom, LOUISIANA.

nnm-nnan-surron'rme norm.

Application filed January 20, 1927. Serial No. 162,866.

The invention relates to a construction of bolt used in conjunction with brake beam supports 11 railway trucks and the ob ect of the bolt is, first, to provide a quick meansjto 6 fasten the support to the spring plank of the railway truck, therebysavmg a great deal of labor I cessity ofriveting the support to the spring plank heretofore requlred; and thnd, to afford aquick means for'gloosening the support from the spring plank. 4

One form of the invention is illustrated in the accompanyng drawing, which lTrg'. 1,

is a plan view of, the bolt; Fig.2, a view in 15- elevation; Fig. 3, a detailed view in perspective; and Fi 4, a view in perspective showing how the qlts are used on a railway truck. 3 E

. The bolt has al'sta'ndard thread 1, asshown in Figs. 1 and 3, on one end andthe other end is turnedup making a" U-bend Between the U-bend the bolt is pinched in at 3 and the edge is filed making a V- shaped knife edge 4. The knife edge is case-hardenedortempered, depending upon the material from which the bolt is made; Casehardening or tempering gives the bolt long- 4 port comprislng a circular rod member bent 66 er wearing quahty. i

Four bolts are required for each railway 80 truck. Fig. -shows where the'bolts are used. A JV-shapednotch is cut into the spring plank at 5 and the V-sha ed kn fe edge of the bolt slips into the'notc I, cut nto the s ring plank and a channel or angle Iron 8 .6 wit two holes is fastened under the spring "plank b lock-nuts attached to the threa of the olt. The notch cut in the spring second, to eliminate the neplank prevents: the bolts from slippingthus causing a rigid and steady support for the brake beam. t

I am aware that prior to my invention brake beam supportshavebeen fastened by means of screws, rivets, and bolts but these arrangements have not been satisfactory for permittin a quick installation or removal of the bra e beam support.

I claim: p I 1. A bolt member for attachment to a beam comprising a screw threaded shank, a J-shaped head on said shank and a knife edge positioned between' the underside of said J-shapedhead and said shank for pre venting longitudinal movement ofsaid bolt member along said beam. f I

2; A bolt member for attachment to a 5 beam comprising a screw threaded shank, a. J-shaped head on said shank, said head he flattened adjacent the junction thereof wit said shank, said flattened portion being provided with a biting edge extending between 00 said J-shaped head and said shank for pre- 6 venting longitudinal displacement of said bolt member with respect to said beam.

3. A bolt member for attachment to a supsubstantially in the shape oi a J, screw threads on one end of said rod member, a flattened notch between the-head of said bolt and the screwthreaded ortion of said rod and a V-shaped biting e ge formed on said notch for preventing longitudinal movement of said bolt with respect to a support.

' ERRELL CARROLL LUNSFORD. 

